Double-current syringe



Patented J an. 6, 1920.

S14/vanto@ Jrs. K. AJITGHELL,

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, 5 2 l ff.

J. K. MITCHELL.

DOUBLE CURRENT SYRINGE. APPLICATION ingo MAY 5, 1919.

,LUM

JOSEPH KINNEY MITCHELL, OF MEMPHIS, TENNESSEE.

DOUBLE-CU'RBJEN T SYRINGE.

Specification of Letters Patent.

Patented Jan. 6, 1920.

Application filed May 5, 1919. Serial No. 294,695.

To all whom t may concern:

Be it known that I, JOSEPH KINNEY MITCHELL, a citizen of the United States, and a resident of Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Double-Current Syringes, of which the following is a specification.

My invention is an improvement in double current syringes, and has for its object to provide mechanism of the character specified, wherein, by means of a single instrument, a thorough irrigation may be had with thorough drainage.

' ln the drawings is shown a sectional view of the improved syringe.

In the present embodiment of the invention a tu'bular casing 1 is provided, of suitable material, as, for instance, hard rubber, and this tube has at one end a reduced externally threaded nipple 2 which is engaged by a perforated cap 3, the said cap acting as a spray head to throw the water in a spray.

The opposite end of the casing is open, as shown, and the casing has a laterally extending branch or nipple 4. This branch, as shown, diverges from the main casing at an acute angle, and the outer end thereof is reduced, as shown at 5, to receive a rubber hose 6 or the like for connecting the syringe with a source of fluid supply.

At the junction between the branch and the main tube there is a web or partition 7 extending into the main tube somewhat less than half the diameter thereof, and extending to near the opposite side of the branch. The free edge of this web is spaced apart from both walls of the tube l, so that the .liquid may flow freely on either side of the partition.

In use, the tubular portion l is inserted into the cavity to be irrigated, the branch 4 being connected with the source of liquid supply by means of the hose 6. The iingers grasp the branch as indicated in dotted lines, and the thumb engages and closes that end of the tube l remote from the spray head. The liquid must now flow through the branch, past the web 7 and through the spray head. After a suiicient amount of liquid has been permitted to flow, the thumb is removed from the open end of the casing l and the cavity is permitted to drain.

A repetition of this procedure will insure a most thorough irrigation, with free drainage at all times, thoroughly removing any foreign matter or accretions.

I claim:

l. A device of the character specied comprising a tubular casing having one end open and having the other provided with a detachable spray head, said casing having a branch near the open end extending from the body of the casing toward the spray head at an acute angle with respect to the main casing, said branch being adapted for connection with a source of liquid supply, the open end of the main casing being adapted to be closed by the thumb to provide either irrigation or drainage, and a web at the junction of the branch with the main casing for deiecting the water entering the branch out at the open end of the tube.

2. A device of the character specified comprising a tubular casing having one end open and having the other provided with a detachable spray head, said casing having a branch near the open end and extending from the body of the casing toward the spray head at an acute angle with respect to the main casing, said branch being adapted for connection with a source of liquid supply, the open end of the main casing being adapted to be closed by the thumb to provide either irrigation or drainage.

3. A device of the character specified comprising a tubular casing having near one end a branch inclining outwardly toward the other end and adapted for connection with a source of liquid, said casing having a web at the junction of the branch with the main casing for deflecting the water enterin by the branch toward the adjacent end of the casing.

4f. A device of the character specified comprising a tubular casing having near one end a branch extending toward the other end and inclining outwardly therefrom and adapted vfor connection with a source of liquid supply, the said other end being adapted for insertion into the cavity to be irrigated, and the said rst named end being opened to permit water to How freely through the casing from the cavity or from the branch.

JOSEPH KINNEY MITCHELL. 

